print(1+2-3)
print(1+2*3)

print((67.5+89.0+12.9+32.2)/4)

a = 10
print(type(a))

b = 13.2
print(type(b))

c = 'hello'
print(type(c))

e = 'My name is "lxy"'
print(type(e))

print(len(c))

a1  = 'hello '
a2 = 'world '
print(a1+a2)

print(5 // 3)